Chain cutter for machines for sewing looped fabrics



A ril 24, 1934. R. F. BALL 1,956,485

CHAIN CUTTER FOR MACHINES FOR SEWING LOOPED FABRICS Original Filed 001;. 14. 1952 2 Sheets-Shet 1 Z? "3 5 be M INVENTOR ATTOR N EY April 4, 1934. R. F. BALL 1,956,485

CHAIN CUTTER FOR MACHINES FOR SEWING LOOPED FABRICS Original Filed Oct. 14, 1932 2 Sheets-Sheet 2 Ej/f/ohj/e E Ea Z 7/ INVENTOR ATTOR N EY entree STATES PArsN'r errics CHAIN CUTTER FOR MACHINES FOR SEWING LOOPED FABRICS Ritchie F. Ball, Narrws,'Va.

Application October 14, 1932, Serial No. 637,823 Renewed September 25, 1933 7 Claims. (Cl. 112-252) This invention relates to a cutter attachment aperturedas shown at 9, to rotatably receive the for a looping machine designed for joining knitted drive shaft 4 and is limited in its endwise movefabric in the form of stockings and like articles, ment on the shaft by a coiled spring 10 sur- Wherein said stockings when acted on by the looprounding the shaft with one end bearing against a ing machine are joined by a chain thread and the collar 11 fixed to the shaft and its other end bear- 60 present invention has for the primary object, the ing against the knife supporting plate and provision of means to automatically sever the forcing the latter against a hub 12 fixed to chain thread between the stockings on the comthe drive shaft and carrying a chain pick-up pletion thereof by the looper so that the comhook 13. The hook 13 is adapted to rotate with pleted stockings may be individually removed and the drive shaft while the knife plate remains cg, obviate the customary practice of cutting the stationary and as the stockings are completed chain thread manually by the use of scissors or on the looping machine the hook engages under similar hand tools. the chain thread between each pair of stockings With these and other objects in view this in and draws the thread upwardly into engagement vention consists in certain novel features of conwith a knife blade 14 carried by the plate 8 so that 70 struction, combination and arrangement of parts the stockings are separated from each other to to be hereinafter more fully described and claimed. permit their removal from the looping machine.

For a complete understanding of my invention, The knife blade 14 is adjustably secured to the reference is to be had to the following descripplate 8 by set bolts 15 and the plate 8 has extendtion and accompanying drawings, in which ing therefrom a substantially L-shaped arm 16 75 Figure 1 is a fragmentary plan View illustratcarrying at its free end an adjustable bolt 17 ing a looping machine with a cutter attachment adapted to engage with the disc supporting arm 3 applied thereto and constructed in accordance of the looping machine to prevent rotation of with my invention. the knife blade 14 with the shaft 4. The set bolt Figure 2 is a fragmentary side elevation illus- 17 being adjustably connected to the arm 16 perv trating the attachment in the act of severing the mits the location of the knife relative to the hook chain thread between Stockings. 13 to be varied.

Figure 3 is a detail view partly in section illus- While I have shown and described the preferred trating the mounting and adjustment of the cutembodiment of my invention, it will be understood ter attachment. that minor changes in construction, combination Figure 4 is a plan view illustrating a knife and arrangement of parts may be made without holder. departing from the spirit and scope of my inven- Figure 5 is a sectional View taken on the line tion, as claimed.

55 of Figure 3. Having described the invention, I claim: Figure 6 is a sectional view taken on the line 1. In combination with a looping machine hav- 66 of Figure 3. ing a rotatable disc supported by an arm and Referringindetail to the drawings, the numeral provided with impaling pins and a drive shaft 1 indicates in its entirety a conventional type of to impart rotation to said disc, a knife supported looping machine designed especially for joining by the shaft and arm and means on the shaft parts of unfinished knitted stockings and like arto bring a chain thread connecting knitted articles, and includes the usual disc 2 supported by ticles on the impaling pins into engagement with the arm 3 and rotated by a drive shaft 4; The the knife for automatically severing said chain drive shaft and operating means therefor and the thread during the rotation of the shaft. arm 3 are supported by a head 5, the disc 2 being 2. In combination with a looping machine havv provided with the usual radially extending impaling a rotatable disc supported by an arm and ing pins 6 on which the knitted fabric is mounted. provided with impaling pins and a drive shaft to As this type of looping machine is well known in impart rotation to said disc, a knife supported by the art it is not thought necessary to herein dethe shaft and arm and means on the shaft to scribe the operation of the same other than that bring a chain thread connecting knitted articles 56 the stockings and like articles are joined to each on the impaling pins into engagement with the other by a chain thread 7, which must be severed knife for automatically severing said chain thread on the removal of the completed stockings from during the rotation of the shaft, and means for the machine and to automatically accomplish adjusting the knife relative to said means. this, my invention is applied to the looping ma- 3. In combination with a looping machine hav- 5 chine and consists of a knife supporting plate 8 ing a rotatable disc supported by an arm and 119 provided with impaling pins and a drive shaft to impart rotation to said disc, a knife plate apertured to receive the shaft, means engaging said arm to hold the plate against rotation with the shaft, a knife carried by the plate and means on the shaft to bring a chain thread connecting knitted articles on the impaling pins into engagement with the knife for automatically severing said chain thread during the rotation of the shaft.

l. In combination with a looping machine having a rotatable disc supported by an arm and provided With impaling pins and a drive shaft to impart rotation to said disc, a knife plate apertured to receive the shaft, means engaging said arm to hold the plate against rotation on the shaft, a knife adjustably mounted on the plate and means on the shaft to bring a chain thread connecting knitted articles on the impaling pins into engagement with the knife for automatically severing said chain thread during the rotation of the shaft.

5. In combination with a looping machine having a rotatable disc supported by an arm and provided with impaling pins and a drive shaft to impart rotation to said disc, a knife plate apertured to receive the shaft, means engaging said arm to hold the plate against rotation on the shaft, a knife adjustably mounted on the plate, a hook-shaped element fixed to the shaft for engaging a chain thread connecting knitted articles on the impaling pins and bringing said chain thread into engagement with the knife for automatically severing said thread during the rotation of said shaft.

6. In combination with a looping machine having a rotatable disc supported by an arm and provided withimpaling pins and a drive shaft to impart rotation to said disc, a plate apertured to receive the shaft, a knife blade adjustably secured to the plate, a hub secured to the shaft and engaging one side of the plate, a spring on the shaft and engaging the other side of the plate, a collar fixed to the shaft and engaging the other end of the spring, a hook carried by the hub to engage and bring a chain thread connecting knitted articles on the impaling pins into engagement with the knife blade for automatically severing said chain thread during the rotation of the shaft, and means engaging the arm to prevent rotation of the plate with the shaft.

'7. In combination with a looping machine having a rotatable disc supported by an arm and provided with impaling pins and a drive shaft to impart rotation to said disc, a plate apertured to receive the shaft, a knife blade adjustably secured to the plate, a hub secured to the shaft and engaging one side of the plate, a spring on the shaft and engaging the other side of the plate,

a collar fixed to the shaft and engaging the other 1 end of the spring, a hook carried by the hub to engage and bring a chain thread connecting knitted articles on the impaling pins into engagement with the knife blade for automatically severing said chain thread during the rotation of the shaft, an L-shaped arm carried by the plate, and adjustable means between the L-shaped arm and the first-named arm to adjust the knife blade relative to the hook.

RITCHIE F. BALL. 

